Posted by posted by Kevin Barber at
Once in a while I like to go back and re-visit some of the pictures I've taken but haven't done anything with. This is particular picture was done using a technique called HDR (High Dynamic Range). Multiple exposures are used to capture both dark areas and light areas in greater detail. Those exposures are then put together on the computer to create one large file which contains much more information than would normally be captured.
Your eyes are very good at adjusting to a high range of lights to darks - that is to say they have a higher dynamic range than a camera can capture. Unfortunately, a computer display and printer have even less of a dynamic range, so we have to resort to tricks to be able to "correctly" reproduce what you could see if you're looking at that scene.
This was captured last April ('06) just northeast of Des Moines at Ashton Wildwood County Park
on my way back from working in Waterloo.
Labels: Landscape, Nature